Related Party Transactions - Transactions with Anheuser-Busch, LLC (A-B), Ambev and Anheuser-Busch Worldwide Investments, LLC (ABWI) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Related Party Transaction [Line Items]
Percentage of stock owned by A-B	31.30%		31.30%		31.40%
Affiliated entity | Anheuser-Busch, LLC (A-B) and Ambev | Gross sales
Related Party Transaction [Line Items]
Sales revenue or fee earned from related party	$ 50,283	$ 49,144	$ 87,851	$ 81,785
Affiliated entity | Anheuser-Busch Worldwide Investments, LLC (ABWI) | International distribution fees
Related Party Transaction [Line Items]
Sales revenue or fee earned from related party	850	850	1,700	1,700
Affiliated entity | Anheuser-Busch Worldwide Investments, LLC (ABWI) | International distribution fees recorded in Deferred revenue
Related Party Transaction [Line Items]
International distribution fee, recorded as deferred revenue in Other accrued expenses	650	400	1,300	800
Affiliated entity | Anheuser-Busch Companies, LLC (ABC) | Contract Brewing fee earned
Related Party Transaction [Line Items]
Sales revenue or fee earned from related party	395	0	858	0
Affiliated entity | Anheuser-Busch, LLC (A-B) | Margin fee paid, classified as a reduction of Sales
Related Party Transaction [Line Items]
Fee paid to related party	687	669	1,205	1,157
Affiliated entity | Anheuser-Busch, LLC (A-B) | Inventory management and other fees paid, classified in Cost of sales
Related Party Transaction [Line Items]
Fee paid to related party	100	101	190	192
Affiliated entity | Anheuser-Busch, LLC (A-B) | Media and other reimbursement from A-B, classified as a reduction of Selling, general and administrative expenses
Related Party Transaction [Line Items]
Fee paid to related party	0	$ 74	0	$ 74
Affiliated entity | Anheuser-Busch, LLC (A-B) | Amounts due related to beer sales
Amounts due to or from Anheuser-Busch, LLC [Abstract]
Amount due from related parties	23,593		23,593		$ 15,663
Affiliated entity | Anheuser-Busch, LLC (A-B) | Refundable deposits
Amounts due to or from Anheuser-Busch, LLC [Abstract]
Amounts due to related party	(1,982)		(1,982)		(1,619)
Affiliated entity | Anheuser-Busch, LLC (A-B) | Services rendered
Amounts due to or from Anheuser-Busch, LLC [Abstract]
Amounts due to related party	(9,002)		(9,002)		(4,836)
Affiliated entity | Anheuser-Busch Worldwide Investments, LLC (ABWI) And Anheuser Busch, LLC (A-B) | International distribution fees
Amounts due to or from Anheuser-Busch, LLC [Abstract]
Amount due from related parties	3,000		3,000		5,000
Anheuser-Busch Worldwide Investments, LLC (ABWI) And Anheuser Busch, LLC (A-B) | Anheuser-Busch, LLC (A-B)
Amounts due to or from Anheuser-Busch, LLC [Abstract]
Net amount due from related party	$ 15,609		$ 15,609		$ 14,208